Simultaneous localization and mapping by using Earth's magnetic fields

a technology of magnetic field and localization, applied in the field of indoor positioning systems, can solve the problems that the global positioning system (gps)-based location tracking or any other satellite-based system may not work accurately inside the building

Active Publication Date: 2016-10-25
INDOORATLAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Global positioning system (GPS)-based location tracking or any other satellite based system may not work accurately inside a building due to lack of reliable reception of satellite coverage.

Method used

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  • Simultaneous localization and mapping by using Earth's magnetic fields
  • Simultaneous localization and mapping by using Earth's magnetic fields
  • Simultaneous localization and mapping by using Earth's magnetic fields

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Embodiment Construction

[0021]The following embodiments are exemplary. Although the specification may refer to “an”, “one”, or “some” embodiment(s) in several locations of the text, this does not necessarily mean that each reference is made to the same embodiment(s), or that a particular feature only applies to a single embodiment. Single features of different embodiments may also be combined to provide other embodiments.

[0022]In order to enable positioning, a GPS based location discovery and / or tracking is known. The GPS location discovery may not, however, be suitable for indoors due to lack of satellite reception coverage. For indoor based location tracking, RF based location discovery and location tracking may be used. In such system, a round trip time of the RF signal, or the power of the received RF signal, for example, may be determined to an indoor base station to which the user device is connected to. Some other known positioning measures, which may be applicable indoors, include machine vision, m...

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Abstract

There is provided an apparatus configured to perform operations comprising: acquiring motion data sets from the plurality of mobile devices; estimating route models of the traveled routes on the basis of the motion data sets; generating EMF fingerprints for the traveled routes by associating the acquired EMF data sets with corresponding points of the route models; and determining the locations of the routes with respect to each other on the basis of at least one of the following: the EMF fingerprints and the route models.

Description

FIELD[0001]The invention relates generally to indoor positioning systems. More particularly, the invention relates to application of Earth's magnetic field measurements for mapping and positioning.BACKGROUND[0002]Global positioning system (GPS)-based location tracking or any other satellite based system may not work accurately inside a building due to lack of reliable reception of satellite coverage. Therefore, other means need to be considered.BRIEF DESCRIPTION OF THE INVENTION[0003]According to an aspect of the invention, there is provided an apparatus that comprises at least one processor and at least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to perform operations comprising: (i) acquiring indoor non-labeled Earth's magnetic field, EMF, data sets representing at least one of magnitude and direction of the EMF in a building from a plurality of m...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G01C21/08G01V3/40G01S5/16G01S5/02G01C21/14G01C21/16G01R33/10G01V7/00G01C21/20G01V3/08H04W64/00
CPCG01C21/206G01C21/08G01C21/14G01C21/165G01R33/10G01S5/0221G01S5/0252G01S5/0263G01S5/16G01V3/40G01V7/00H04W64/00G01S5/0264G01S2205/02G01S5/02522G01C21/1654
Inventor HAVERINEN, JANNERAHTU, ESA
Owner INDOORATLAS
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